Pin electronic for automatic testing of integrated circuits
AssigneeVerigy (Singapore) Pte. Ltd.
InventorRolf Harjung
Life of this patent
Estimating the term…
Abstract
A pin electronic adapted for use in an automatic test equipment for testing integrated circuits ICs includes a driver circuit having an input for receiving an input signal from a data source and an output connected with an input pin of a device under test, and a feedback circuit having at least one input, which receives an input voltage or current at the input pin of the DUT, and an output. The feedback circuit is adapted to provide a voltage in order to force a substantially constant voltage or current at the input pin of the DUT, and a switching device for alternatively connecting the input of the driver circuit with the data source or the output of the feedback circuit.
Claims10
A pin electronic adapted for use in an automatic test equipment—ATE—for testing integrated circuits—ICs—, comprising:
- a driver circuit having a first input for receiving an input signal from a data source and an output connected with an input pin of a device under test—DUT—,
- a feedback circuit having at least one input, which receives an input voltage or current at the input pin of the DUT, and an output, wherein the feedback circuit is adapted to provide a voltage in order to force a substantially constant voltage or current at the input pin of the DUT, and
- first switching means for alternatively providing a second input of the driver circuit with a first voltage V1 or with the output of the feedback circuit.
A method for performing a parametric measurement at an input pin of a device under test—DUT—with a pin electronic adapted for use in an automatic test equipment—ATE—for testing integrated circuits—ICs—, comprising
- a driver circuit having a first input for receiving an input signal from a data source and an output connected with an input pin of a device under test—DUT—,
- a feedback circuit having at least one input, which receives an input voltage or current at the input pin of the DUT, and an output, wherein the feedback circuit is adapted to provide a voltage in order to force a substantially constant voltage or current at the input pin of the DUT, and
- switching means for alternatively providing a second input of the driver circuit with a voltage V1 or the output of the feedback circuit,
- with the following steps:
- in a first mode switching the switching means for providing the driver circuit with the output of the feedback circuit for receiving the voltage provided by the feedback circuit for forcing a defined voltage at the input pin of the DUT, and
- in a second mode switching the switching means for providing the first voltage V1 to the driver circuit for driving said input data to input pin of the DUT.
Dependencies are inferred from the claim text.